Experimental Evaluation of MIMO Capacity for Ultrawideband Body-Centric Wireless Propagation Channels

被引：12

作者：

Qaraqe, Marwa ^{[1
]}

Abbasi, Qammer H. ^{[1
,2
,3
]}

Alomainy, Akram ^{[4
]}

Serpedin, Erchin ^{[1
]}

机构：

[1] Texas A&M Univ, Dept Elect & Comp Engn, College Stn, TX 77843 USA

[2] Texas A&M Univ, Dept Elect & Comp Engn, Doha, Qatar

[3] UET, Lahore 54890, Pakistan

[4] Queen Mary Univ London, Dept Elect Engn & Comp Sci, London E1 4NS, England

来源：

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2014年 / 13卷

关键词：

Body area networks; channel capacity; multiple-input-multiple-output (MIMO); on-body channels; ultrawideband; RADIO; PERFORMANCE;

D O I：

10.1109/LAWP.2014.2309982

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this letter, the capacity of ultrawideband (UWB) multiple-input-multiple-output (MIMO) on-body channels is evaluated. Three on-body channels are investigated-namely, Chest-Waist, Wrist-Waist, and Ankle-Waist channels. The data transmission capacities of each channel are evaluated and presented using the two power allocations schemes-namely, equal power allocation and the waterfilling power allocation. Statistical analysis is performed on the MIMO channel data, and the Rician K-factors of the channels are analyzed. It is found that the waterfilling scheme outperforms the equal power scheme in terms of capacity for all three on-body channels, with an average improvement of 1.2 b/s/Hz for signal-to-noise ratio (SNR) less than 12 dB (percentage improvement of 187% at 0 dB and 100% at 8 dB). However, the performances of the two schemes become comparable as the SNR increases with less than 0.28 b/s/Hz difference (percentage improvement of 3.6%) at an SNR level of 20 dB.

引用

页码：495 / 498

页数：4

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